(20161) 1996 TR66

Infobox Planet
bgcolour=#FFFFC0
name=mp|(20161) 1996 TR|66
discovery=yes
discoverer=D. C. Jewitt, C. A. Trujillo, J. X. Luu, J. Chen [ [http://cfa-www.harvard.edu/iau/lists/TNOs.html List Of Transneptunian Objects ] ]
discovered=October 08, 1996
mp_name=mp|(20161) 1996 TR|66
alt_names="none"
mp_category=Twotino
epoch=December 31, 2006 (JD 2454100.5)
semimajor=7147.886 Gm (47.781 AU)
perihelion=4286.818 Gm (28.656 AU)
aphelion=10008.954 Gm (66.906 AU)
eccentricity=0.400
period=120635.952 d (330.28 a)
inclination=12.432°
asc_node=343.070°
arg_peri=308.898°
mean_anomaly=43.591°
avg_speed=4.13 km/s
physical_characteristics=yes
dimensions=139 km [ [http://www.johnstonsarchive.net/astro/tnoslist.html List of known trans-Neptunian objects ] ]
mass=2.8e|18? kg
density=2.0? g/cm³
surfave_grav=0.0388? m/s²
escape_velocity=0.0735? km/s
sidereal_day=? d
spectral_type=?
abs_magnitude=7.5
albedo=0.10?
single_temperature=~40 K

mp|(20161) 1996 TR|66, also written as (20161) 1996 TR66, is a Trans-Neptunian object (TNO) orbiting beyond Pluto in the Kuiper belt. It was discovered on October 8, 1996 by David C. Jewitt, Chad Trujillo, Jane X. Luu, and Jun Chen at the Mauna Kea Observatory, Hawaii.

It is in a 2:1 orbital resonance with Neptune, so it has been categorized as a , of which it is the earliest discovered.

References